Vagrant Shell provisioner for returning the ip address of your vm.

gistfile1.rb

#typically you need this for a dhcp public network setup
#with private networks you set the ip address but it is still useful
#to have this provisioner if you reload the vagrant file as it will remind
#you what the ip address is, so you can set it in your host file.

#use eth0 if the network is public, eth1 if the network is private
$network_interface = "eth0"                                                      
$display_ip_address = <<IP_ADDRESS                                               
ipaddress=`/sbin/ifconfig #{$network_interface} | grep 'inet addr' | awk -F' ' '{print $2}' | awk -F':' '{print $2}'`
echo "ip address: $ipaddress"                                                    
IP_ADDRESS

config.vm.provision "shell", inline: $display_ip_address
  

to execute this script while the vm is running I can always run:

vagrant provvision --provision-with shell